Release

Backflow stops

For example, if washing machines, toilets or showers are installed in a basement below the flood level (road surface) and their wastewater flows to the public sewer by natural gradient, flooding can occur in exceptional situations such as heavy rainfall events. In this case protection against backflow and flooding is required. If no backflow protection or basement protection is available, if the public sewers are overloaded, then a mixture of rainwater, wastewater and sludge is pressed back into the building via the pipes and gullies or drains and floods the adjacent rooms. ACO's anti-flooding devices can be installed so that they are easy to access for repairs, for example, in floor gullies, continuous pipes or in the ground slab, and thus provide permanent protection against pressing water from the sewer. ACO backflow valves are easy to install and handle. They are reliable, secure and are available in nominal sizes DN 50 to DN 150; perfect for new build and for modernisation projects.